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Digital Signal Processing Questions and Answers | Digital Signal Processing MCQs

Free download in PDF Digital Signal Processing Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) The anti-symmetric condition with M even is not used in the design of which of the following linear-phase FIR filter?
[A] Low pass
[B] High pass
[C] Band pass
[D] Bans stop
Answer: Low pass
(2) The anti-symmetric condition is not used in the design of low pass linear phase FIR filter.
[A] True
[B] False
Answer: True
(3) If H(z) is the z-transform of the impulse response of an FIR filter, then which of the following relation is true?
[A] zM+1.H(z-1)=±H(z)
[B] z-(M+1).H(z-1)=±H(z)
[C] z(M-1).H(z-1)=±H(z)
[D] z-(M-1).H(z-1)=±H(z)
Answer: z-(M-1).H(z-1)=±H(z)
(4) The roots of the polynomial H(z) are identical to the roots of the polynomial H(z-1).
[A] True
[B] False
Answer: True
(5) The roots of the equation H(z) must occur in ________________
[A] Identical
[B] Zero
[C] Reciprocal pairs
[D] Conjugate pairs
Answer: Reciprocal pairs
(6) If the unit sample response h(n) of the filter is real, complex valued roots need not occur in complex conjugate pairs.
[A] True
[B] False
Answer: False
(7) What is the value of h(M-1/2) if the unit sample response is anti-symmetric?
[A] 0
[B] 1
[C] -1
[D] None of the mentioned
Answer: 0
(8) What is the number of filter coefficients that specify the frequency response for h(n) symmetric?
[A] (M-1)/2 when M is odd and M/2 when M is even
[B] (M-1)/2 when M is even and M/2 when M is odd
[C] (M+1)/2 when M is even and M/2 when M is odd
[D] (M+1)/2 when M is odd and M/2 when M is even
Answer: (M+1)/2 when M is odd and M/2 when M is even
(9) What is the number of filter coefficients that specify the frequency response for h(n) anti-symmetric?
[A] (M-1)/2 when M is even and M/2 when M is odd
[B] (M-1)/2 when M is odd and M/2 when M is even
[C] (M+1)/2 when M is even and M/2 when M is odd
[D] (M+1)/2 when M is odd and M/2 when M is even
Answer: (M-1)/2 when M is odd and M/2 when M is even
(10) Which of the following is not suitable either as low pass or a high pass filter?
[A] h(n) symmetric and M odd
[B] h(n) symmetric and M even
[C] h(n) anti-symmetric and M odd
[D] h(n) anti-symmetric and M even
Answer: h(n) anti-symmetric and M odd
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